import java.util.Scanner;

public class VolatileDemo {
    private static volatile int n=0;
    public static void main(String[] args) {
        Thread t1=new Thread(()->{
            while(n==0) {
                //啥都不做
            }
            System.out.println("t1线程结束循环");
        });
        Thread t2=new Thread(()->{
            Scanner scanner=new Scanner(System.in);
            System.out.println("请输入一个整数:");
            n=scanner.nextInt();
        });
        t1.start();
        t2.start();
    }
}
